ActionScript :: Flex - Keep Selection When Refreshing Datagrid

Oct 20, 2010

I'm working on my first ever AIR application with flashbuilder - just so you know. I've bound a mx:DataGrid component to a DataProvider which is a mx:HTTPService fetching an xml file with items. To keep the data up to data I'm polling the webservice on a given interval.

My problem is that I loose the currently selected item in my DataGrid when the data is updated. I've tried to save the DataGrid.selectedIndex and set when the data is updated, but I'm not sure when to do it?! The closest I've come is to restore the index when the updateComplete event of DataGrid is fired. This works, but the selection first fades away and then fades in - not updated soon enough. So what is the best way to keep the selection? (only one selected item at a time) And as a side question: is there a convenient way to only update the data when it has actually changed?

Similar Posts:

Flex :: Refreshing A Binded DataGrid

Mar 23, 2011

I have a problem..I am binding an array collection to a datagrid in flex. My problem is whenever i try to remove an item from the array collection.. the datagrid does not refresh the values....This is the code that I am using

[Code]....

eventsList is the datagrid that is bounded to showArray(an Array Collection)

Flex :: Multiple Row Selection In Datagrid

May 12, 2010

flex example to select multiple row selection in datagrid

Flex :: Keep Selection After Refresh In Datagrid?

Jun 6, 2011

My datagrid is filled with data from an Oracle database. The datagrid refreshes after 1 min. After that, I lose the selected item. I want to avoid that. Consider that it's quite possible that there is new data after refresh, so the selected index may no longer appear in the datagrid after a refresh.

Flash Flex Datagrid Selection

Oct 14, 2011

I have a dataGrid in Flex to which data is added dynamically using dataGrid1.dataProvider=myArrayCollection;The DataGrid is non-editable and defined in mxml as [code]The data in myArrayCollection definitely does not contain duplicates.I am not able to select any row except the last.This occurs when I overlay the AIR 3 SDK on my copy of Flex

Actionscript 3 :: Flex - Selection In Flex Datagrid Does Not Pass The ValueObject To SelectionChangeHandler Function

Aug 11, 2011

I have a TabNavigator, and each tab is a Module. One of the modules is labelled Units and the full code of the module is posted in this post. There are several problems:

1) Forms are not populated with data from the datagrid selection.
2) Selecting a row and clicking delete gives the very-common error: TypeError: Error #1009: Cannot access a property or method of a null object reference.

A trace on the valueObject unit within the selectionChangeHandler function gives NULL. Why? Note: In other modules (other tabs of the TabNavigator), I have DropDownLists populated with units. This means that the valueObject Unit is defined in the other modules. However, valueObjects should be private to modules, and not shared.

[Code]....

Xml :: Flex + DataGrid + Dynamic Display On Selection

Dec 17, 2009

Back again with another Flex question. I have an XML structure like...

[Code]...

Now I got his displaying on my grid by saying dataProvider=XMLListCollection... What I want to do is on selection of a row, check if it has "Address" tag, if it has display the other grid, else hide the grid.

Flex :: Selecting Row On Selection Of CheckBox In Datagrid

Jan 5, 2010

I have a datagrid with 5 columns. The first column has checkboxs and rest four columns have data from the dataProvider.

I have two relating issues: First: I want the row to get selected when I click on a checkbox, or if i click on multiple checkboxes, every row should stay selected in the datagrid for whose checkbox is selected.

Second: If a row or multiple rows are selected, the corresponding checkbox should get selected too.

My code is given below:

<mx:DataGrid id="dg_trashContent" allowMultipleSelection="true"
verticalGridLines="true"
dataProvider="{trashDataProvider}"

[code].....

Flex :: Blue Selection Of Datagrid Row Programmatically?

Jan 28, 2010

I have a question I came up with 3 days ago about how to do the blue underlining of a datagrid row programmatically. I thought to have found the solution, with just adding the column and row Indexes to the datagrids editedItemPosition Property.It turned out, that this is just practical if you want to be able to edit the grids row right away. But what if I just want to underline it with the blue color?Additionally how to detect that a list based Item got this kind of selection? es there a event to detect that? whats the name of this kind of selection?

Flex :: Maintain Selection In A DataGrid When The Data Changes?

Apr 6, 2010

I have a DataGrid and I set the DataProvider to my data. When my data changes the DataGrid loses the selected row and the scroll bar jumps back to the top. How do I maintain the selection and scroll position?

Flex :: Combobox Selection Inside Datagrid?

Mar 1, 2011

I have a datagrid.In this datagrid I have a combobox item editor. This datagrid also has multiple columns where a user inputs numbers in each column. These numbers are then calculated by formula where the sum is posted in the "total" column. In this combobox there are two options for the user to choose from and each option has a different formula for calculating the inputted numbers. What I want is for when a user chooses "option 1" one formula is used to do the calculation, when "option 2" is chosen by the user then formula two is used to the calculation.Here's an example:

Combobox Option 1 (formula 1) is chosen by user = (Column2 - Column1) x column3 = "total" column
Combobox Option 2 (formula 2) is chosen by user = (Column1 - Column2) x column3 ="total" column

I realize you would use a conditional such as "if else" statement, but im just not sure how to do it. I've been trying to implement this for a while with no success.

Actionscript 3 :: Disabling Datagrid Selection In Flex

Oct 21, 2011

i have an array list of data which i am showing in spark data grid. once i select an idem and click on a button that i have linked with datagrid it adds a panel on screen. I want to disable this selection i-e to tell that this item panel have already been added. Any ideas how can i do that?

Flex :: Set The Selection Border Color In Spark Datagrid

Jun 29, 2011

I have a custom skin applied to a Flex 4 spark datagrid. One really annoying issue I am having is finding the ability to override or change the selected row border color. I was able to set the selectionColor just fine but the border is still the default light blue color. I need it to be yellow.

Anyone know where I can find this style or override this border that is being set when selection happens within the skin itself.

Flex :: Flash - Use Image As The Selection And Hovering Background In DataGrid?

Dec 13, 2010

I want to display an image instead of Color in item Selection and Hovering(mouse over) in Flex DataGrid. how i can do it ?

Flex :: Capture And Optionally Cancel A Row Selection Event In A DataGrid?

Sep 16, 2011

I have a DataGrid, and what I would like to do, is when a user clicks on a row to select it, check a certain condition, and if it's met prevent the row from getting selected and keep the old selection intact.

Flex :: Make Datagrid Selection And Hover Effect (blue Color) Programmatically

Jan 25, 2010

I have two datagrids which should do everything synchronic except the data entry. I already managed to make them scroll synchronic by using the scroll event. My question is now how to select a item of a datagrid only programmatically, and how to get the mouseover effect and underlining the corresponding row with a bright blue color?

Flex :: Spark DataGrid On Mobile Application Handle Scroll And Selection Item?

Dec 15, 2011

I have a spark datagrid on a mobile application, I set the

interactionMode="touch"

and the dataGrid scrolling is good, I got some problems adding a selectionChange eventListener to it, because scrolling the dataGrid will automatically change the selection and instead simply scrolling it, the function binded will start...

How can I add the touch dalay before select the index, so if I scroll the grid the selection won't change, and it change only if I press the item without scrolling?

Chain Selection In Datagrid?

Mar 16, 2011

ArrayCollection with multiple filter functions i want to do chain selection datagrid which means consider two textinput seaech name and age if i searched a name and get a result if i search a age the result in a datagrid should be respective to the searched name

Flash :: DataGrid Column Selection Events?

Mar 1, 2011

What event is called when you click on an editable field to edit it, and then click off of the field? in a datagrid using Flex 4? If I'm not making much sense I'm trying to make a datagrid where you can edit the fields and once you're done editing those fields the application calls an event listener which triggers a save method.

ActionScript 3.0 :: ComboBox Selection To Update A DataGrid?

Nov 6, 2010

I'am trying to create a Flex Application where users can select courses from a combo box based on the department that offers the course. The combo box has an XML variable as its data provider and has the different departments listed. When a user selects the department from the combo box the courses offered for that department should automatically update (show up) in the data grid under their respective columns. What it needs to do is retrieve the XML for the selected department and then set the data provider for the srcgrid accordingly. I am having a lot of trouble with things displaying correctly in the data grid. The course should be under Course ID, course name under Name, etc...

HTML Code:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[

[Code]....

Flex :: Reset/reload A Flex Application Without Refreshing The HTML Page Or Reloading The SWF File?

Jan 12, 2011

I have a flex application that has a home button. I need to reset the application when this button is clicked. I can't use navigateToURL or ExternalInterface.call("window.location.reload"); as its not acceptable to reload the swf file.

Flex :: Refreshing An XML File Through HTTPService?

Apr 21, 2010

I'm having a problem refreshing an xml file. I am bringing it in through an HTTP service component and putting it into a bindable array _cattArr, that I am using as the dataprovider for a grid.When someone adds an item to the datagrid, it saves to the same xml file. Then I close the window, reopen it and don't see the item that has been added.It is writing to the xml file, because when I restart the flex app, the item has been added, it's just not refreshing it. I have tried to resend the httpservice, but still no luck. What is the correct process for doing this?

Actionscript 3 :: Refreshing A Flex Component?

Jul 14, 2011

Is there a way to refresh a component or an application back to its initial state? I have an accordion navigator that stays on the most recently selected index even if I log out. Right now, my log out function takes me back to the login page which is at state(1). If I log back in and go into the accordion, it is on the last tab I had viewed.I would like to be able to clear any data from the controls inside the nav and reset the nav back to its default. I thought something like,

public function logout():void{
currentState = "NotLoggedIn"
myAccordion.initialize(); }

would work but nothing happens. This is done in Flex 4.I know I can make a huge loop clearing each control individually and setting the selectedIndex of the accordion to 0.

Flex :: Refreshing View When Application Is Visible?

Aug 16, 2010

Flex application is contained in one of the rows of a html table, and that row is hidden as per one use case. Flex application is refreshed when visibility of the row is changed to visible. This results in lose of data that is already entered in the flex application. Is there any way to stop this behavior?

Flex 3 :: Refreshing Repeater After Adding A Child

May 23, 2011

Within a child, I have an XML element with the following structure:[code]I then use a repeater to list each out onto the screen. There's a button I have created that is used to create a position. So, once the user clicks this button, I call the following function:[code]The above function creates a new XML object, puts some default values in, and appends it to the list of project positions. After appending the new information, I made the height of the project larger and then check to make sure the new project height isn't overlapping any other projects... but that information is irrelevant to this post.My problem is this - once i append a new child to the XML variable, it doesn't appear on the screen. Is there a "refresh" or "re-render" option i can do to the repeater in order to make the new child show?[code]Once i make the changes, and use the XMLListCollection as the dataprovider in the repeater, the information no longer loads on the screen.

Actionscript :: Disable Datagrid Header Rollover Color And Selection Color?

Jul 22, 2010

how could i remove these two colors for the header.... i could override rollover for the columns and leave the selection, but i want to remove these two effects from the header and i couldn't find a way to do that....

Flex :: ComboBox LabelFunction Not Refreshing With Updating Of An ArrayCollection?

Aug 11, 2010

My first issue is that when my ArrayCollection only has one item, for some reason I cannot select that first item. The change function set on the mxml never gets called when I try to select that one item. If I set a prompt, it works. I know that the item is not already selected because when debugging, the selected item shows null. I do not want to use a prompt. I want the first item in the ArrayCollection to be selected automatically. So if there is only one item, I want the selected item to be that. FYI - I am using a labelFunction to format the data in the Array Collection. why I cannot select the first item or set the first item in the ArrayCollection to be the selected item?

My bigger issue is that when my Array Collection gets updated, my label function must not be refreshing because when I first open the dropdown, it has specfic data. When the Array Collection gets updated and I open the dropdown again, I see the old data in the dropdown, yet it doesn't exist anymore.

So let's say I have a ComboBox that has a datasource of an array collection of one state code and it's state name. Their is a labelFunction that puts a dash in between the state code and the state name. Their is no prompt, so the ComboBox would look like GA - Georgia and when you open the dropdown, that would be all that is there. I want that item to be selected automatically. why the old data shows up when opening the dropdown after the array collection was updated with new data?

<mx:ComboBox labelFunction="getFormattedNpaNxxCollectionList()"
dataProvider="arrayColl" change="doSomething()"/>
public function getFormattedNpaNxxCollectionList(item:Object):String
{
return StringUtil.substitute("{0} - {1}", item.stateCode, item.stateName);
}

Flex :: Refreshing HiearachicalData Based On Source Updates?

Apr 4, 2011

I have an ArrayCollection we'll call "Items". It is essentially a flat collection of hierarchical data (each item has Parent and Children properties). I want an AdvancedDataGrid to display the data in hierarchical form, so essentially I could just do this and it would display fine:

// Note: RootItems would be an ArrayCollection that is updated so only the
// top level items are within (item.Parent == null).
var hd:HierarchicalData = new HierarchicalData(model.RootItems);

[code].....

ActionScript 3.0 :: Delete Temp Files With Refreshing Flex Application?

Apr 12, 2011

I am using many external swf file in my flex application,but when i use the files which are in same name its not getting refreshing properly, so i need to delete my temp file without refreshing the application.

Actionscript 3 :: Flex: Refreshing Custom Mxml Component On Button Click

Mar 3, 2010

I have defined small MXML component which calls web service which returns random number on request, then my component displays the number.

How do I refresh the MXML from main application control, so it will recall server again?

Copyrights 2005-15 www.BigResource.com, All rights reserved